Uncovering the missing data in the gas cloud with P-P wave imaging: The first deepwater OBN survey from Southeast Asia

Improving pre-salt image with reflection full-waveform inversion in Santos Basin

“…Zhang et al (2017) and Yanez et al (2018) demonstrated successful application of a workflow based on adjustive FWI (AdjFWI) (Jiao et al, 2015), followed by conventional LS FWI to resolve shallow fluvial channels in the North Sea, while reducing turnaround time (TAT) with the parallel execution with signal processing and data conditioning for multi-layer common image point (CIP) tomography. Menzel-Jones et al (2018) demonstrated similar TAT advantages, while resolving shallow gas anomalies with a combination of AdjFWI and least-squares (LS) FWI. In deep water, complex geology, and subsalt environments, where the use of transmitted energy is often limited by the finiteacquisition spread, the use of RFWI gained popularity.…”